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LTM8045 Inverting or SEPIC µModule DC/DC Converter with Up to 700mA Output Current FEATURES DESCRIPTION n SEPIC or Inverting Topology n Wide Input Voltage Range: 2.8V to 18V n Up to 700mA Output Current at V IN = 12V, V OUT = 2.5V or –2.5V n Up to 375mA Output Current at V IN = 12V, V OUT =15V or –15V n 2.5V to 15V or –2.5V to –15V Output Voltage n Selectable Switching Frequency: 200kHz to 2MHz n Programmable Soft-Start n User Configurable Undervoltage Lockout n 6.25mm × 11.25mm × 4.92mm BGA Package APPLICATIONS n Battery Powered Regulator n Local Negative Voltage Regulator n Low Noise Amplifier Power V OUT – BANK 1 V OUT + BANK 2 16 5 4 3 2 1 FB A B C D TOP VIEW GND BANK 3 E F SS RT BGA PACKAGE 40-LEAD (11.25mm × 6.25mm × × 4.92mm) LTM8045EY LTM8045IY LTM8045MPY G VIN 2.8VDC TO 18VDC H V IN BANK 4 4.7µF RUN SYNC 130k 115k V IN RUN SS RT SYNC VIN RUN SS RT SYNC • • µModule Regulators The LTM ® 8045 is a µModule ® (micromodule) DC/DC converter that can be configured as a SEPIC or inverting converter by simply grounding the appropriate output rail. In a SEPIC configuration the regulated output voltage can be above, below or equal to the input voltage. The LTM8045 includes power devices, inductors, control circuitry and passive components. All that is needed to complete the design are input and output capacitors, and small resistors to set the output voltage and switching frequency. Other components may be used to control the soft-start and undervoltage lockout. The LTM8045 is packaged in a compact (6.25mm × 11.25mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8045 is RoHS compliant. Use Two LTM8045s to Generate ±5V LTM8045 GND LTM8045 GND • • V OUT – FB V OUT + VOUT – FB V OUT + OUTPUT CURRENT (mA) 8045 TA01b 800 700 600 500 400 300 200 100 ±2.5VOUT ±3.3VOUT ±5VOUT ±8VOUT ±12VOUT ±15VOUT 2 4 6 8 10 12 14 16 18 INPUT VOLTAGE (V) 60.4k 45.3k Maximum Output Current vs Input Voltage V OUT –5V 22µF 100µF VOUT 5V 8045 TA01b
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement FEATURES DESCRIPTION n Sequence, Trim, Margin and Supervise Eight Power Supplies n Manage Faults, Monitor Telemetry and Create Fault Logs n PMBus Compliant Command Set n Supported by LTpowerPlay GUI n Margin or Trim Supplies to 0.25% Accuracy n Fast OV/UV Supervisors Per Channel n Coordinate Sequencing and Fault Management Across Multiple Chips n Automatic Fault Logging to Internal EEPROM n Operate Autonomously without Additional Software n Internal Temperature and Input Voltage Supervisors n Accurate Monitoring of Eight Output Voltages, Input Voltage and Internal Die Temperature n I2C/SMBus Serial Interface n Can Be Powered from 3.3V, or 4.5V to 15V n Programmable Watchdog Timer n 100% Pin-Compatible Upgrade to the LTC2978/LTC2978A n Available in 64-pin 9mm × 9mm QFN Package APPLICATIONS n Computers and Network Servers n Industrial Test and Measurement n High Reliability Systems n Medical Imaging n Video VSENSEM6 1 VSENSEP7 2 VSENSEM7 3 VOUT_EN0 4 VOUT_EN1 5 VOUT_EN2 6 VOUT_EN3 7 VOUT_EN4 8 VOUT_EN5 9 VOUT_EN6 10 VOUT_EN7 11 VIN_EN 12 DNC 13 VIN_SNS 14 VPWR 15 VDD33 16 TOP VIEW 64 VSENSEP6 63 VSENSEM5 62 VSENSEP5 61 VDACM7 60 VDACP7 59 VDACP6 58 VDACM6 57 VDACM5 56 VDACP5 55 VDACP4 54 VDACM4 53 VSENSEM4 52 VSENSEP4 51 VDACM3 50 VDACP3 49 VSENSEM3 65 GND VDD33 17 VDD25 18 WP 19 PWRGD 20 SHARE_CLK 21 WDI/RESETB 22 FAULTB00 23 FAULTB01 24 FAULTB10 25 FAULTB11 26 SDA 27 SCL 28 ALERTB 29 CONTROL0 30 CONTROL1 31 ASEL0 32 UP UP PACKAGE 64-LEAD (9mm × 9mm) PLASTIC QFN 64-LEAD (9mm × 9mm) PLASTIC QFN LTC2977CUP LTC2977IUP 48 V SENSEP3 47 V SENSEM2 46 VSENSEP2 45 VDACM2 44 VDACP2 43 VSENSEM1 42 V SENSEP1 41 VDACM1 40 VDACP1 39 VDACP0 38 VDACM0 37 VSENSEM0 36 V SENSEP0 35 REFM 34 REFP 33 ASEL1 Protected by U.S. Patents, including 7382303, 7420359 and 7940091. 4.5V < VIBUS < 15V** 3.3V** TO INTERMEDIATE BUS CONVERTER ENABLE PMBus INTERFACE WRITE-PROTECT TO/FROM OTHER LTC POWER SUPPLY MANAGERS The LTC ® 2977 is an 8-channel Power System Manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs. PMBus commands support power supply sequencing, precision point-of-load voltage adjustment and margining. DACs use a proprietary soft-connect algorithm to minimize supply disturbances. Supervisory functions include overvoltage and undervoltage threshold limits for eight power supply output channels and one power supply input channel, as well as over and under temperature limits. Programmable fault responses can disable the power supplies with optional retry after a fault is detected. Faults that disable a power supply can automatically trigger black box EEPROM storage of fault status and associated telemetry. An internal 16-bit ADC monitors eight output voltages, one input voltage, and die temperature. In addition, odd numbered channels can be configured to measure the voltage across a current sense resistor. A programmable watchdog timer monitors microprocessor activity for a stalled condition and resets the microprocessor if necessary. A single wire bus synchronizes power supplies across multiple LTC power system management devices. Configuration EEPROM supports autonomous operation without additional software. Power System Management ERROR (%) Typical ADC Total Unadjusted Error vs Temperature 8-Channel PMBus Power System Manager VPWR VIN_SNS VDD33 VDACP0 VIN_EN VSENSEP0 SDA LTC2977* SCL VDACM0 ALERTB VSENSEM0 CONTROL0 VOUT_EN0 WP PWRGD WDI/RESETB FAULTB00 ASEL0 SHARE_CLK ASEL1 GND 2977 TA01a 0.25 0.20 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 –0.20 –0.25 –50 VSENSEP0 = 1.8V THREE TYPICAL PARTS –30 –10 10 30 50 70 90 110 TEMPERATURE (°C) VIN 2977 TA01b R20 R30 VOUT DIGITALLY MANAGED POWER SUPPLY LOAD VFB R10 TO µP RESETB INPUT WATCHDOG TIMER INTERRUPT SGND RUN/SS GND *SOME DETAILS OMITTED FOR CLARITY ONLY ONE OF EIGHT CHANNELS SHOWN **MAY BE POWERED FROM EITHER AN EXTERNAL 3.3V SUPPLY OR THE INTERMEDIATE BUS 17
Page 1 and 2: May 2013 New Products Catalog High
Page 3 and 4: Amplifier Contents LTC6430-15 High
Page 5 and 6: LTC6430-15 High Linearity Different
Page 7 and 8: LTC3300-1 High Efficiency Bidirecti
Page 9 and 10: LTC3245 Wide V IN Range, Low Noise,
Page 11 and 12: The LTC ® 2314-14 leads a family o
Page 13 and 14: LTC2315-12 12-Bit, 5Msps Serial Sam
Page 15 and 16: LTM9013 300MHz Digital Predistortio
Page 17 and 18: LT3030 Dual 750mA/250mA Low Dropout
Page 19: LTM8001 36V IN, 5A µModule Regulat
Page 23 and 24: LTC3129-1 15V, 200mA Synchronous Bu
Page 25 and 26: LTC3621/LTC3621-2 17V, 1A Synchrono
Page 27 and 28: LTC3639 High Efficiency, 150V 100mA
Page 29 and 30: LTC3863 60V Low I Q Inverting DC/DC
Page 31 and 32: The LTC ® 6957 is a dual output bu
Page 33 and 34: LTC6957-1/LTC6957-2/LTC6957-3/LTC69
Page 35 and 36: Intelligent Systems SoCKIT to Me! D

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